package com.lagou.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpCookie;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@SuppressWarnings("all")
@Component
public class TokenFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        response.getHeaders().add("Content-Type", "text/plain;charset=UTF-8");
        //邮件服务走过滤器
        if (!request.getURI().getPath().startsWith("/api/code") && !request.getURI().getPath().startsWith("/api/user")) {
            HttpCookie token = request.getCookies().getFirst("token");
            if (token == null) {
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                DataBuffer wrap = response.bufferFactory().wrap("Request has been denied!".getBytes());
                return response.writeWith(Mono.just(wrap));
            }
        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 1;
    }
}
